CVE-2023-30591

NodeBB Pre-Authentication Denial-of-Service

HIGH
7.5
CVSS Score
Published: September 29, 2023 at 05:06 AM UTC
Updated: June 17, 2026 at 05:55 AM UTC
1 product affected across 1 vendorNodeBB

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Severity
HIGH7.5
Exploit prediction
EPSS 59%
SSVC
PoC

Description

Denial-of-service in NodeBB <= v2.8.10 allows unauthenticated attackers to trigger a crash, when invoking `eventName.startsWith()` or `eventName.toString()`, while processing Socket.IO messages via crafted Socket.IO messages containing array or object type for the event name respectively.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 2.8.10

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHSTAR_Labs
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-241CWE-754

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